Ubuntu 22.04.3切换至X11后双显示器失效的解决需求（兼顾Upwork截图功能）

Hey there, let's work through this problem together—you need both monitors to run smoothly and get Upwork's screenshot feature working, right? Here are a few practical approaches to try:

方案1：给Upwork单独启用XWayland兼容（无需切换整个桌面到X11） #

Wayland supports most X11 apps via XWayland, and Upwork (being an Electron app) can leverage this to fix the screenshot issue without breaking your dual-monitor setup. Here's how:

• Open a terminal and launch Upwork with this command:

  GDK_BACKEND=x11 upwork
  

• Test the screenshot feature—if it works, you can make this permanent by editing Upwork's desktop shortcut:
  • Copy Upwork's .desktop file to your local applications folder to avoid modifying system files:

    cp /usr/share/applications/upwork.desktop ~/.local/share/applications/
    

  • Open the copied file with a text editor (like Gedit):

    gedit ~/.local/share/applications/upwork.desktop
    

  • Find the line starting with Exec=upwork and change it to:

    Exec=env GDK_BACKEND=x11 upwork
    

  • Save the file, then launch Upwork from your app menu—screenshots should work, and your dual monitors will stay functional under Wayland.

方案2：修复X11下的Intel Arc显卡驱动配置 #

If you prefer switching the entire desktop to X11, the issue is likely that Xorg isn't properly detecting your Intel Arc A750's HDMI output. Let's fix that:

1. Update your Intel Arc drivers:
   Run these commands in terminal to ensure you have the latest drivers:

   sudo apt update && sudo apt upgrade
   sudo apt install intel-media-va-driver-non-free
   

2. Generate and adjust Xorg configuration:
   • Generate a base Xorg config file:

     sudo Xorg -configure
     

   • Copy the generated file to the X11 config directory:

     sudo cp /root/xorg.conf.new /etc/X11/xorg.conf
     

   • Restart GDM to apply changes:

     sudo systemctl restart gdm3
     

3. If the monitor still isn't detected:
   • Run xrandr in terminal to list all available display ports (your Arc A750's HDMI might show up as HDMI-2 or similar).
   • Manually enable the secondary monitor with a command like this (adjust the port names and position to match your setup):

     xrandr --output HDMI-2 --auto --right-of HDMI-1
     

   • You can save this command as a startup script to run automatically when you log into X11.

方案3：重新配置X11登录后的显示设置 #

Sometimes the issue is just a misconfigured display setting after switching to X11:

• Log out, then select "Ubuntu on Xorg" from the gear icon on the login screen.
• After logging in, open Settings > Displays—check if your secondary monitor is listed here. If yes, reconfigure its resolution and position, then click "Apply" to save.
• If the monitor isn't listed, use the xrandr command from方案2 to manually enable it as described.

备注：内容来源于stack exchange，提问作者Ashif #